Important Notice: We're experiencing email notification issues. If you've posted a question in the community forums recently, please check your profile manually for responses while we're working to fix this.

On Monday the 3rd of March, around 5pm UTC (9am PT) users may experience a brief period of downtime while one of our underlying services is under maintenance.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Firefox won't open on my new imac, get message in a red bar stating "bookmarks and history system will not be functional because one of Firefox's files is in us

  • 3 replies
  • 5 have this problem
  • 1 view
  • Last reply by cor-el

more options

I have a new iMap using 10.9 OS. All was working fine for several weeks, then I got the above error message. I have uninstalled and reinstalled Firefox and when I open it I get a window with the above statement in a red box across the top of the window, and am unable to get into Firefox to do any of the suggested fixes.

I have a new iMap using 10.9 OS. All was working fine for several weeks, then I got the above error message. I have uninstalled and reinstalled Firefox and when I open it I get a window with the above statement in a red box across the top of the window, and am unable to get into Firefox to do any of the suggested fixes.

All Replies (3)

more options

See:

Try to delete the places.sqlite file in the Firefox profile folder.

more options

Thanks, but I can't get into Firefox to delete places.sqlite or do anything, the site is frozen or whatever, can't get into history, bookmarks, help, etc. All I have is a spinning wheel. Sorry, I am not good at any of this, so I apologize for being so dense.

more options

In Mac OS X v10.7 and later, the $HOME/Library folder is a hidden folder.

  • /Users/<user>/Library/Application Support/Firefox/Profiles/<profile>/